iocp: fix crash, GetQueuedCompletionStatus() write freed WSAOVERLAPPED memory

.github/workflows/ci-win.yml

@@ -590,3 +590,33 @@ jobs:
         set LIB=%LIB%;%FFMPEG_DIR%\lib;%SDL_DIR%\lib\x86
         msbuild pjproject-vs14.sln /p:PlatformToolset=v143 /p:Configuration=Release /p:Platform=win32 /p:UseEnv=true
       shell: cmd
+
+  iocp:
+    runs-on: windows-latest
+    name: IOCP / pjlib
+    steps:
+    - uses: actions/checkout@master
+    - name: config site
+      run:
+        cd pjlib/include/pj; cp config_site_test.h config_site.h; Add-Content config_site.h "#define PJ_IOQUEUE_IMP PJ_IOQUEUE_IMP_IOCP"
+      shell: powershell
+    - name: check VsDevCmd.bat
+      run: dir "%PROGRAMFILES%\Microsoft Visual Studio\2022\Enterprise\Common7\Tools\VsDevCmd.bat"
+      shell: cmd
+    - name: MSBuild
+      working-directory: .
+      run: |
+        call "%PROGRAMFILES%\Microsoft Visual Studio\2022\Enterprise\Common7\Tools\VsDevCmd.bat"
+        msbuild pjproject-vs14.sln /p:PlatformToolset=v143 /p:Configuration=Release /p:Platform=win32 /p:UseEnv=true
+      shell: cmd
+    - name: verify ioqueue type is iocp
+      run: |
+        cd pjlib/bin
+        pjlib-test-i386-Win32-vc14-Release.exe -c -L | findstr /C:"ioqueue type" | findstr iocp
+      shell: cmd
+    - name: pjlib-test
+      run: |
+        cd pjlib/bin
+        $args = $env:CI_WIN_ARGS -split ' '
+        ./pjlib-test-i386-Win32-vc14-Release.exe $args $env:CI_MODE
+      shell: powershell

pjlib/build/Makefile

@@ -47,7 +47,7 @@ export PJLIB_LDFLAGS += $(_LDFLAGS)
 export TEST_SRCDIR = ../src/pjlib-test
 export TEST_OBJS += activesock.o atomic.o echo_clt.o errno.o exception.o \
 		    fifobuf.o file.o hash_test.o ioq_perf.o ioq_udp.o \
-		    ioq_stress_test.o ioq_unreg.o ioq_tcp.o \
+		    ioq_stress_test.o ioq_unreg.o ioq_tcp.o ioq_iocp_unreg_test.o \
 		    list.o mutex.o os.o pool.o pool_perf.o rand.o rbtree.o \
 		    select.o sleep.o sock.o sock_perf.o ssl_sock.o \
 		    string.o test.o thread.o timer.o timestamp.o \

pjlib/build/pjlib_test.vcxproj

@@ -717,6 +717,7 @@
     <ClCompile Include="..\src\pjlib-test\fifobuf.c" />
     <ClCompile Include="..\src\pjlib-test\file.c" />
     <ClCompile Include="..\src\pjlib-test\hash_test.c" />
+    <ClCompile Include="..\src\pjlib-test\ioq_iocp_unreg_test.c" />
     <ClCompile Include="..\src\pjlib-test\ioq_perf.c" />
     <ClCompile Include="..\src\pjlib-test\ioq_stress_test.c" />
     <ClCompile Include="..\src\pjlib-test\ioq_tcp.c" />

pjlib/build/pjlib_test.vcxproj.filters

@@ -126,6 +126,9 @@
     <ClCompile Include="..\src\pjlib-test\ioq_stress_test.c">
       <Filter>Source Files</Filter>
     </ClCompile>
+    <ClCompile Include="..\src\pjlib-test\ioq_iocp_unreg_test.c">
+      <Filter>Source Files</Filter>
+    </ClCompile>
   </ItemGroup>
   <ItemGroup>
     <ClInclude Include="..\src\pjlib-test\test.h">